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本文讨论的范围是民乐县童子坝河以西的北祁连山区。笔者根据1979～1982年在北祁连山西段的野外观察及对采获的古生物化石分析,综合研究区域地质调查资料,对前人所作出的以下结论有不同认识,即:1.北祁连山西段奥陶纪末志留纪初发生了一次造山运动,形成志留系不整合于奥陶系之上;2.中奥陶世末有一个巨大的造山运动——古浪运动,形成妖魔山组不整合于中堡群之上;3.妖魔山灰岩代表
The scope of this article is the northern Qilian Mountains to the west of Tongziloba River in Minle County. Based on the field observations from the western section of the Qilian Mountains in 1979-1982 and paleontological fossils analysis of the harvesting in the area from 1979 to 1982, the author made a comprehensive study on the regional geological survey data to make different understandings on the following conclusions made by the predecessors, namely: 1. The western section of the northern Qilian Mountains Ordovician at the end of Silurian occurred a orogeny, the formation of Silurian unconformity in the Ordovician system; 2. Late Ordovician end of a huge orogeny - Gulang movement, the formation of the Demon Mountain Group Not integrated in Fort on the group; 3 demon mountain limestone representatives